<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=initial-scale=1.0">
    <title>Document</title>
    <style>
        body{
            background-color: rgb(122, 96, 122);
        }

        .btn{
            width:1060px;
            height: 300px;
            margin: 400px auto;
        }
        .btn1{
            width: 150px;
            height: 40px;
            border-radius: 20px;
            background-color: red;
            display: inline-block;
            margin: 0px 100px;
        }

        .btn1:hover{
            box-shadow: red 0px 0px 3px 5px;
        }


        .btn2{
            width: 150px;
            height: 40px;
            border-radius: 20px;
            background-color: rgb(0, 98, 255);
            display: inline-block;
            margin: 0px 100px;
        }
        .btn2:hover{
            box-shadow: rgb(0, 98, 255) 0px 0px 3px 10px;
        }

        .btn3{
            width: 150px;
            height: 40px;
            border-radius: 20px;
            background-color: rgb(30, 255, 0);
            display: inline-block;
            margin: 0px 100px;
        }
        .btn3:hover{
            box-shadow: rgb(30, 255, 0) 0px 0px 10px 10px;
        }
    </style>
</head>

<body>
    <div class="btn">
        <div class="btn1"></div>
        <div class="btn2"></div>
        <div class="btn3"></div>
    </div>
</html>